Treateb carbonaceous fuel



Patented June 30, 1925.?

UNITED STATES GUSTAV EGLOFF AND HARRY r. IBENNER, OF INDEPENDENCE, KANSAS, AssreNons- I 1,543,833 PATENT OFFICE.

TO UNIVERSAL OIL PRODUCTS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA.

' TREAT D oAnEoNAcEoUs FUEL.

Application filed February 10, 1921.

To all whom it may concern:

Be it known that we, GUSTAV EcLorF and HARRY P. BENNER, both citizens of the United States, residing in the town of Inde 6 pendence, county of Montgomery, and State of Kansas, have invented certain new and useful Improvements in Treated CarbonaceousFuel, of which the following is a specification.

This invention relates to improvements in carbonaceous fuel and refers more particularly to an oil saturated carbon produced b the cracking of heavy petroleum oils suc as fuel oil, Mexican or California crudes, 1 bottom settlin s' or the like.

In the cracl ring of heavy fuel oils, much pitchy carbon is precipitated which is suitable for use as fuel. In the cracking of, for example, Wayside fuel oil, on a commerclal 20 scale in the manner hereinafterdescribed,

6925 gallons of said fuel oil produced 2300 pounds of .oil soaked pitchy carbon wh1ch can be used as a fuel, either for heating the cracking apparatus or boiler or for any other useful fuel purposes. The productlon of this pitchy carbon is a-large economical item in the cracking of heavy oils, such as asphaltic oils of high carbon formlng properties.

As an illustration, a plant cracking 3000 barrels of fuel oil from the Kansas Ways de field would produce approximately 20 tons wet carbon a day. In cracking heavy crude petroleums such as heavy Mexican crude from the Panuco field, over 40 tons a 'day of wet carbon would be produced by the cracking of 3000 barrels a day. To illustrate the immensity of this carbon production, consider the following: The shipment of petroleum oil from the Panuco field was over a million barrels for the week ending August 28, 1920. If this amount of Panuco crude was cracked and it certainly will be desirable to crack it, there would be produced as a maximum 17,000 tons of carbon per week. This carbon might be worth from $5.00 to $10.00 a ton. ceous fuel can be used in lump form either in the same manner by stoker or hand firing or it may be pulverized and used much the same as fuel oil with steam ora blower.

To more clearly illustrate the manner of producing this carbonaceous fuel, reference may be had to the accompanying drawing in If desired, this wet carbona-- Serial No. 443,745.

designates the furnace having burner 2,

stack 3, and combustion chamber 4. In the combustion chamber is mounted the heating coil 5 which may, for example, be from 20 to 40 tubes, each 20 feet long, and connected in' series. The inlet side of the coil or heating element is connected to a feed pump 6 by charging line 7 having throttle valve 8. lhe raw fuel oil is fed to the coil through the pipe 9 having throttle valve 10 leading to any suitable source of supply. The discharge side of the coil is connected by transfer line 11 having throttle valve 12 to a vapor or expansion chamber 13. This expansion chamber 13 is of relatively large size. A pluralit of these expansion chambers may be use and so connected that one may be cut out to be cleaned and the other out into the system to use. This is not shown for the reason that we are not here claiming the a paratus. Each expansion chamber is provided with a residue drawoff pipe,14 having throttle valve 15 leading to any suitable storage receptacle. The member 13 is provided with a pressure gauge 16, vapor out etpi e 17 having throttle valve 18 and leading to ephlegmator 19. The u per end of the dephlegmator is connected by vapor line 20 having throttle valve 21 to condenser coil 22 seated in condenser box 23. The lower end of the coil is connected by pipe 24 through throttle valve 25 into receiver 26. This receiver 26 has a pressure.

gauge 27, liquid level gauge 28, liquid drawofl 29 having throttle valve 30 and gas outlet pipe 31 having throttle valve 32.

The process may be operated as follows: Fuel oi as for example, from the Wayside field, havin say, a Baum gravity of 23 degrees, or %I of from 12 to 18 degrees Baum gravity, may be fed continuously through the heating soil, raised to a temperature of from 650 to 800 degrees F., and delivered in liquid base to the expansion chamber or chambers.

e whole system may be maintained under a pressure of sa 100 to 150 ounds. Heavier va ors w ich enter the d phle mator will condensed and continuous y exlcan or California crude oil' returnedas reflux condensate to .the system. In the apparatus of substantially the principle shown in the drawing, Wayside fuel oil was cracked and produced an amount of wet pitchy carbon equal to that heretofore described.

AS an essential feature of the present process, this wet pitchy carbon which may be continuously or intermittently drawn out-of the vapor c amber or other chambers where it collects is now treated so that it can be more readily shipped. This is effectively done by dissolving out .theoily constituents by a solvent. A suitable solvent would be the pressure distillate bottoms which would, of course, be available in a cracking process. The dissolving out of theoil of the liquid oily content would leave the pitchy material and carbon in such condition that it. could be pressed into briquettes for shipment.

As amodification of the process, it may be desirable at times to dissolveout both the liquid oil content and the pitchy material leavin a dry carbon which from certain oils could e suitably used for metallurgical purposes, electrodes, fillers for tires, tire casings and the like.

What is produced by the present process would be a dry carbon suitable for use as carbonaceous fuel and preferably produced as part of a continuous process or operation of a cracking process.

We claim as our invention:

An artificial fuel composed of a residue obtained from the-cracking of petroleum oil under heat and pressure, said fuel consisting of a pitchy solid carbon which has been freed of its oily constituents and is in a substantially dr state, and obtained b subjecting the pitc y carbon residue to t e action of pressure distillate produced by the crackin of the petroleum oil to remove the liquid o1l therefrom.

GUSTAV EGLOFF. HARRY P. BENNER. 

